Diagnostic tool for testing and wiring trailer lights



FIG. 1 is a front elevational view of a diagnostic tool for testing and wiring trailer lights showing my new design.

FIG. 2 is a rear elevational view of the diagnostic tool for testing and wiring trailer lights.

FIG. 3 is a left side elevational view of the diagnostic tool for testing and wiring trailer lights.

FIG. 4 is a right side elevational view of the diagnostic tool for testing and wiring trailer lights.

FIG. 5 is a top plan view of the diagnostic tool for tesing and wiring trailer lights; and,

FIG. 6 is a bottom plan view of the diagnostic tool for testing and wiring trailer lights. 

The ornamental design for a diagnostic tool for testing and wiring trailer lights, as shown and described. 